#!/usr/bin/python

# Copyright (c) 2009, Purdue University
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 
# Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright notice, this
# list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution.
# 
# Neither the name of the Purdue University nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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"""This script is used for importing zone files into the database."""

__copyright__ = 'Copyright (C) 2009, Purdue University'
__license__ = 'BSD'
__version__ = '0.5'


import getopt
import getpass
import os
import sys
from optparse import OptionParser

from roster_config_manager import zone_importer_lib


def main(args):
  user = unicode(getpass.getuser())
  parser = OptionParser()

  parser.add_option('-c', '--config-file', action='store', dest='config',
                    help='Database config file.', metavar='<config-file>',
                    default=None)
  parser.add_option('-d', '--directory', action='store', dest='directory',
                    help='Directory of zone files to load in. Mutually '
                         'exclusive from -f/--file', metavar='<directory>',
                    default=None)
  parser.add_option('-f', '--file', action='store', dest='file',
                    help='Zone file to load in. Mutually exclusive from '
                         '-d/--directory.', metavar='<file>',
                    default=None)
  parser.add_option('-v', '--view', action='store', dest='view',
                    help='View to put records in.', metavar='<view>',
                    default=None)

  (globals()["options"], args) = parser.parse_args(args)

  if( options.config is None ):
    print "Must specify --config flag."
    parser.print_help()
    sys.exit(1)

  if( options.file is None and options.directory is None):
    print "Must specify --file or --directory flag."
    parser.print_help()
    sys.exit(1)

  if( options.file is not None and options.directory is not None):
    print "Must specify --file or --directory flag but not both."
    parser.print_help()
    sys.exit(1)

  if( options.directory is not None ):
    zone_list = os.listdir(options.directory)
  else:
    zone_list = [options.file]
  total_record_count = 0
  for options.file in zone_list:
    if( options.directory is not None ):
      options.file = '%s/%s' % (options.directory, options.file)
    print 'Loading in %s' % options.file
    importer = zone_importer_lib.ZoneImport(options.file, options.config,
                                            user, view=options.view)

    record_count = importer.MakeRecordsFromZone()
    print '%s records loaded from zone %s' % (record_count, options.file)

    total_record_count += record_count

  print '%s total records added' % total_record_count


if( __name__ == "__main__" ):
  main(sys.argv[1:])


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